An experimental study on the effects of the steel scalpel, electrocautery and various lasers on oral tissue
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The tissue effects of the steel scalpel, electrocautery, CO2 laser and contact Nd-YAG laser were studied on rat tongue. The tip of the tongue (3 mm) was cut off and fixed for histology. The rats (6-10/method/age group) were kept alive for 2, 7 and 14 days, when the remaining tongue was resected. In each postoperative age group the effects to the epithelium and muscular layer were determined separately. Peroperative bleeding was measured and attention was paid to wound contraction and inflammatory cell infiltration.
Postoperative bleeding occurred with the steel scalpel and electrocautery, but not with the lasers. A significant delay in early re-epithelialization was observed after the use of all thermal knives. Resection with steel scalpel was found to result in the smallest damage to the tissues on day 0 (P< 0.01), whereas on day 7 no significant differences were observed between scalpel, electrocautery and CO2 laser. On the other hand there was a significant difference between scalpel and contact Nd-YAG laser (P< 0.05). On day 14 these differences were no longer significant.
Wound contraction on days 7 and 14 was evident after scalpel incision and slight after thermal knives.
The steel scalpel causes less tissue damage than the thermal knives, whereas the advantages of a bloodless operation can be achieved with both lasers used in this study.
Key wordsLasers Electrocautery Oral surgery Tissue effects
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- 2.Hukki J, Krogerus L, Castren, M, Schröder T. Effects of different contact laser scalpels on skin and subcutaneous fat.Laser Surg Med 1988,8:276–82Google Scholar
- 4.Schröder T, Brackett K, Joffe SN. An experimental study of the effects of electrocautery and various lasers on gastrointestinal tissue.Surgery 1987,6:691–7Google Scholar
- 5.Dixon JA. Lasers in Surgery.Curr Probl Surg 1984,21:1–65Google Scholar
- 6.Glover JL, Bendick PJ, Link WJ. The use of thermal knives in surgery: electrocautery, lasers, plasma scalpel.Curr Probl Surg 1978,15:1–78Google Scholar
- 8.Joffe SN, Schröder T. Lasers in general surgery.Advances in Surgery. Chicago: Publishers Year Book 1987,20:125–50Google Scholar
- 9.Ohyama M, Katsuda K, Nobori T et al. Treatment of head and neck tumors by contact Nd:YAG laser surgery.Auris-Nasus-Larynx (Tokyo) 1985,12:138–42Google Scholar
- 10.Fisher SE, Frame JW, Browne RM, Tranter RMD. A comparative histological study of wound healing following C02 laser and conventional surgical excision of canine buccal mucosa.Archs Oral Biol 1983,28:287–91Google Scholar
- 11.Fisher SE, Frame JW. The effects of the carbon dioxide surgical laser on oral tissues.J Oral Maxillofac Surg 1984,22:414–25Google Scholar
- 14.Hirano M, Ohkubo H, Kurita S et al. CO2 laser in treating carcinoma in the tongue.Auris-Nasus-Larynx (Tokyo) 1985,12:10–4Google Scholar
- 16.Joffe SN, Foster J, Schröder T, Brackett K. Splenic resection with the contact Nd:YAG laser system.J Ped Surg 1988,23:829–34Google Scholar